Re-Arm kit C contains; One 33 gram C02 cylinder/inflator body Inflator cap with plastic pull handle Metal key Re-arming instruction manual For inflatable PFD model numbers: MD3153 (02/LE/T3), MD3154 (02), MD3155, MD3157, MD3183 (02/GS/LE/T2/T3), MD3184 (02) and MD3188.